I bought these sections a bit ago.
They are some NOS Parker sections of some sort.
If any one knows what they are please let me know.
I am a big fan of tough pens because I use them a lot at work and in areas that good pens have no business being so when ever I can come up with a tough non expensive pen I love giving it a shot.
A close up of the front as well as the back of the nib.
The cap was from a Hero 616 I had laying on the bench and the acrylic was some stock that had come out of Italy a few years ago